For a variable speed pumping application, what are the main advantages of variable frequency drive (VFD) over liquid rheostat controls? Are there any advantages of liquid rheostats over VFDs?
Any help would be much appreciated. Thanks.
For a variable speed pumping application, what are the main advantages of variable frequency drive (VFD) pumping over liquid rheostats? Are there any advantages of liquid rheostats over VFDs?
Any help would be much appreciated. Thanks.